The specific aim of this study is to determine preliminarily the efficacy of the AMES intervention in helping older adults quickly readjust their posture in order to recover from unexpected loss of equilibrium. An AMES device will be placed into operation at the University of Arkansas for Medical Sciences (UAMS) Out-patient Rehabilitation Therapy Clinic at Fayetteville, Arkansas(AR), where we will recruit 20 healthy, but near-frail subjects. Ten of these participants will be randomly assigned to a treatment group, and the other 10 will be assigned into a control group that will not receive the AMES intervention. Before and after 12 weeks of training with the bipedal AMES device, ankle strength, range of motion, proprioception, and reaction time, as well as gait and whole-body stability following unexpected balance perturbations will be assessed. In addition to measuring sensorimotor impairment and static balance equilibrium,the incidence of falls in all 20 participants beginning with enrollment into the study for a total of 6 months will be tracked. A reduction in sensorimotor impairment, an improvement in dynamic balance, and a reduction in fall incidence in the treatment group, but not in the control group is expected.